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Flow Chart of Troubleshooting
9-40
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9-2-4. Abnormal EGSM Tx Operation
PIN28
PIN27
PIN1
U202 PIN8
≥ -5dBm
F201 PIN4
≥ -15dBm
Resolder RFS200,
L203,C236,L219
U201 PIN55
≥ -15dBm
Check U202
PIN28=H, PIN27=L
PIN1=L
Resolder F201,
R215, R216
R217, C213
Check Antenna
Switch Control
Resolder or Change
U202
YES
YES
YES
YES
NO
NO
NO
TX ON(5 level)
Check U201,
UCP400
END
Содержание SGH-i560V
Страница 41: ...7 Block Diagrams 7 1 7 1 Main Block Diagram ...
Страница 42: ...Block Diagrams 7 2 7 2 RF Solution Block Diagram ...
Страница 43: ...8 PCB Diagrams 8 1 Main top view ...
Страница 44: ...PCB Diagrams 8 2 Main bottom view ...